PT-2026-42828 · Lxqt · Pcmanfm-Qt

Published 2026-05-22 · Updated 2026-05-22 · CVE-2026-48700

Mitre

CVSS v4.0

9.3

Critical

Base vector

AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/AU:N/R:I/V:D/RE:M/U:Clear

An issue was discovered in all versions of PCManFM-Qt starting from 1.1.0. When a regular file's path is passed as a URI in an org.freedesktop.FileManager1.ShowFolders D-Bus method call, PCManFM-Qt delegates to a different program (based on the file type) without user confirmation. This could be used to achieve code execution or circumvent network namespace restrictions. NOTE: those outcomes are potentially unwanted by most users; however, the behavior of the product does comply with the applicable specification, and a simplistic solution (ensuring that the URI does not name a regular file) may have adverse consequences for I/O.

Fix

Weakness Enumeration

CWE-913

Related Identifiers

CVE-2026-48700

Affected Products

Pcmanfm-Qt

References · 3

• https://openwall.com/lists/oss-security/2026/05/19/1 · Note
• https://openwall.com/lists/oss-security/2026/05/20/2 · Note
• https://github.com/lxqt/pcmanfm-qt/releases · Note